US3726178A - Multiple purpose sealing washer for threaded and cylindrical shanks - Google Patents

Multiple purpose sealing washer for threaded and cylindrical shanks Download PDF

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Publication number
US3726178A
US3726178A US00156668A US3726178DA US3726178A US 3726178 A US3726178 A US 3726178A US 00156668 A US00156668 A US 00156668A US 3726178D A US3726178D A US 3726178DA US 3726178 A US3726178 A US 3726178A
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shank
washer
threaded
edge
rigid
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US00156668A
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E Dimitry
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MORSE NENA
APM Corp
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APM Corp
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B43/00—Washers or equivalent devices; Other devices for supporting bolt-heads or nuts
    • F16B43/001—Washers or equivalent devices; Other devices for supporting bolt-heads or nuts for sealing or insulation
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S277/00—Seal for a joint or juncture
    • Y10S277/922—Bonding or joining for manufacture of seal
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S411/00—Expanded, threaded, driven, headed, tool-deformed, or locked-threaded fastener
    • Y10S411/915—Bolt having packing joint

Definitions

  • ABSTRACT A multiple purpose sealing washer for use in effecting a seal between a nut or fastener head and a parallel planar surface by selectively surrounding the threaded or unthreaded shank of said fastener.
  • the device includes an outer, relatively rigid washer element, and an inner concentric elastomeric element having a relatively wide outer peripheral surface bonded to said rigid washer element at an inner peripheral surface thereof, and an inner periphery which is tapered to a sharp edge, corresponding to the interstice between two adjacent threads on said shank, whereby when said inner periphery engages a smooth cylindrical shank, said continuous edge forms a complete seal therebetween by radial expansion, and when said inner periphery is engaged with a threaded shank, the continuous threads thereon will deform said edge at one point on the periphery thereof to permit the other points on said edge to resiliently extend into the interstice between adjacent threads to prevent leakage along said interstice.
  • This invention relates generally to the field of sealing washers of a type characterized in the provision of an outer relatively rigid washer member defining a central circular opening, and an elastomeric element bonded to said rigid washer element, the elastomeric element normally having a portion which is effectively thicker than the thickness of the rigid element, so that when the device is engaged upon a threaded shank of a fastening device, and the same tightened in position, the elastomeric portion will deform under pressure to provide a sealing function.
  • Devices of this type are known in the art, and the invention lies in specific constructional details which permit the wider use of a single device in conjunction with both threaded and smooth shanks.
  • threaded sealing devices comprise an elongated shank which is at least partially threaded, and an enlarged head on one end thereof, the opposite end being engaged by a threaded nut so that the device can be tightened.
  • fasteners having shanks which are only partially threaded along the length thereof, and the seal is placed beneath the head to engage the unthreaded portion of the shank, the effecting of a seal is a relatively simple matter.
  • the hole through which the threaded fastener is inserted provides a rela tively large clearance, and theshank is threaded throughout its entire length, or where the sealing washer is placed beneath the nut, rather than the head, it is common practice to provide a sealing washer which effects a seal directly against the crest of the thread. In the latter case, such a seal still permits leakage along the spiral interstice created by the threads, so that it is necessary to provide a sealing function within this channel.
  • Another object of the invention lies in the provision of an improved sealing washer construction possessed of the above advantage, which may be conveniently fabricated using existing techniques and materials at relatively low cost, thereby permitting consequent wide sale, distribution and use.
  • a further object of the invention lies in the provision of an improved seal washer of the type described which may be used in conjunction with bolts, screws or thread which otherwise incorporate no sealing provision.
  • a further object of the invention lies in the provision of an improved sealing washer in which a single size thereof may be used effectively with screws of a corresponding diameter of varying lead, and with both relatively course and relatively fine threads.
  • FIG. 1 is an end elevational view of an embodiment of the invention.
  • FIG. 2 is a central longitudinal sectional view thereof.
  • FIG. 3 is a central longitudinal sectional view thereof showing the same in installed condition.
  • FIG. 4 is a transverse sectional view as seen from the plane 4-4 in FIG. 3.
  • the device comprises broadly: an outer rigid washer element 11, and an inner elastomeric washer element 12.
  • the outer washer element 11 is of conventional hollow cylindrical configuration, and may be made of any suitable metal, depending upon intended purpose. It is of rectangular cross-section, and it is bounded by an outer peripheral surface 15, first and second side surfaces 16 and 17, respectively, and an inner peripheral surface 18.
  • the inner washer element 12 may be of rubber, either natural or synthetic, or suitable elastomeric resin, again, depending upon intended purpose. It is of irregular cross-section, best seen in FIG. 2, and is bounded by an outer peripheral surface 20, suitably bonded, using known techniques to the inner peripheral surface 18 of the nut element 11. It includes a first annular portion 21 bounded by first and second concave surfaces 22 and 23. A second annular portion 24 is disposed radially inwardly thereof, and is bounded by convex surfaces 25 and 26. It will be observed that the first portion is normally of effective thickness less than that of the outer washer element 11, and the second portion is of effective thickness substantially greater than said thickness.
  • a third annular portion 27 Disposed inwardly of the second annular portion 24 is a third annular portion 27, of generally wedge-shaped configuration, and bounded by first and second concave surfaces 28 and 29 which meet in a curved relatively sharp edge 30 which dsfines the inner diameter of the opening 31 therein.
  • the device 10 is shown in installed condition in conjunction with a nut 33 and threaded shank portion 34, the shank penetrating an opening 35 in a planar surface 36.
  • the clearance between the threads on the shank and those on the nut are normally sufficient to allow leakage of a fluid, and the only practical manner in which a seal can be effected therebetween is by directly engaging the crests of the threads, and providing a means which will penetrate the interstice between the threads to the full depth of the base circle in the area where the crests of the threads are engaged.
  • a size washer is selected such that the diameter of the edge 30 corresponds to the base thread diameter of the shank 34, and upon engagement therewith, the thread will deform the edge much in the manner of a self-tapping fastener. The inner portions of the convex surfaces 25 and 26 will then be deformed to engage the adjacent crests of the threads, thereby completing the seal.
  • the third annular portion 27 is stretched radially outwardly, and since the cross-section thereof is relatively thin, the expansion is readily absorbed by the filling in of the area axially outward of the concave surfaces 22 and 23.
  • a fastener having a threaded shank, the threads of which have v-shaped flanks converging to a narrow root surface, and a multiple purpose sealing washer for effecting a seal between the head of the fastener and a parallel planar surface by surrounding a portion of said shank associated with said head;
  • said washer including a relatively rigid outer washer element, and an inner concentric elastomeric annular element having a relatively rigid wide outer peripheral surface bonded to said rigid washer element, at least one concentric annular portion being of effective thickness greater than that of said rigid washer element spaced inwardly from said outer portion thereof, and having an inner peripheral annular portion of radially inwardly tapering cross section, formed by a pair of concave surfaces terminating in a single continuous annular sharp edge capable of entering into the spiral interstice created by the thread of the shank, said edge being thereby deformed at one point along said inner periphery by said thread upon engagement therewith; the unstressed diameter of said sharp edge corresponding to the root diameter

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Bolts, Nuts, And Washers (AREA)

Abstract

A multiple purpose sealing washer for use in effecting a seal between a nut or fastener head and a parallel planar surface by selectively surrounding the threaded or unthreaded shank of said fastener. The device includes an outer, relatively rigid washer element, and an inner concentric elastomeric element having a relatively wide outer peripheral surface bonded to said rigid washer element at an inner peripheral surface thereof, and an inner periphery which is tapered to a sharp edge, corresponding to the interstice between two adjacent threads on said shank, whereby when said inner periphery engages a smooth cylindrical shank, said continuous edge forms a complete seal therebetween by radial expansion, and when said inner periphery is engaged with a threaded shank, the continuous threads thereon will deform said edge at one point on the periphery thereof to permit the other points on said edge to resiliently extend into the interstice between adjacent threads to prevent leakage along said interstice.

Description

Unite States atent [191 Dimitry Apr. 10, 1973 [75] Inventor: Edward A. Dimitry, Hillsdale, NJ.
[73] Assignee: APM Corporation, Englewood, NJ.
[22] Filed: June 25, 1971 [21] Appl. No.: 156,668
Primary Examiner-Edward C. Allen Att0rneyCharles E. Temko [57] ABSTRACT A multiple purpose sealing washer for use in effecting a seal between a nut or fastener head and a parallel planar surface by selectively surrounding the threaded or unthreaded shank of said fastener. The device includes an outer, relatively rigid washer element, and an inner concentric elastomeric element having a relatively wide outer peripheral surface bonded to said rigid washer element at an inner peripheral surface thereof, and an inner periphery which is tapered to a sharp edge, corresponding to the interstice between two adjacent threads on said shank, whereby when said inner periphery engages a smooth cylindrical shank, said continuous edge forms a complete seal therebetween by radial expansion, and when said inner periphery is engaged with a threaded shank, the continuous threads thereon will deform said edge at one point on the periphery thereof to permit the other points on said edge to resiliently extend into the interstice between adjacent threads to prevent leakage along said interstice.
1 Claim, 4 Drawing Figures MULTIPLE PURPOSE SEALING WASHER FOR THREADED AND CYLINDRICAL SHANKS This invention relates generally to the field of sealing washers of a type characterized in the provision of an outer relatively rigid washer member defining a central circular opening, and an elastomeric element bonded to said rigid washer element, the elastomeric element normally having a portion which is effectively thicker than the thickness of the rigid element, so that when the device is engaged upon a threaded shank of a fastening device, and the same tightened in position, the elastomeric portion will deform under pressure to provide a sealing function. Devices of this type are known in the art, and the invention lies in specific constructional details which permit the wider use of a single device in conjunction with both threaded and smooth shanks.
Most threaded sealing devices comprise an elongated shank which is at least partially threaded, and an enlarged head on one end thereof, the opposite end being engaged by a threaded nut so that the device can be tightened. When using fasteners having shanks which are only partially threaded along the length thereof, and the seal is placed beneath the head to engage the unthreaded portion of the shank, the effecting of a seal is a relatively simple matter. Where the hole through which the threaded fastener is inserted provides a rela tively large clearance, and theshank is threaded throughout its entire length, or where the sealing washer is placed beneath the nut, rather than the head, it is common practice to provide a sealing washer which effects a seal directly against the crest of the thread. In the latter case, such a seal still permits leakage along the spiral interstice created by the threads, so that it is necessary to provide a sealing function within this channel.
In US. Pat. No. 3,259,404, there is disclosed a device of the instant type, in which there is provided a plurality of wedge-shaped protrusions on the inside of the cylindrical opening formed by the sealing element. These protrusions are in co-planar disposition, so that at least one of the protrusions will always be in a position to block the flow of a fluid through the interstice. While this construction is not without utility, it is not, at the same time, a construction suitable for use in engaging the unthreaded portion of a shank, where the shank has not been completely threaded. Thus, where sealing functions of both types are to be effected, two separate types of sealing washers are necessary.
It is therefore among the principal objects of the present invention to provide an improved sealing washer of the type disclosed, which is equally suitable for use in conjunction with completely threaded and partially threaded shanks forming parts of threaded fasteners.
Another object of the invention lies in the provision of an improved sealing washer construction possessed of the above advantage, which may be conveniently fabricated using existing techniques and materials at relatively low cost, thereby permitting consequent wide sale, distribution and use.
A further object of the invention lies in the provision of an improved seal washer of the type described which may be used in conjunction with bolts, screws or thread which otherwise incorporate no sealing provision.
A further object of the invention lies in the provision of an improved sealing washer in which a single size thereof may be used effectively with screws of a corresponding diameter of varying lead, and with both relatively course and relatively fine threads.
These objects, as well as other incidental ends and advantages, will more fully appear in the progress of the following disclosure, and be pointed out in the appended claims.
In the drawing, to which reference will be made in the specification, similar reference characters have been employed to designate corresponding parts throughout the several views.
FIG. 1 is an end elevational view of an embodiment of the invention.
FIG. 2 is a central longitudinal sectional view thereof.
FIG. 3 is a central longitudinal sectional view thereof showing the same in installed condition.
FIG. 4 is a transverse sectional view as seen from the plane 4-4 in FIG. 3.
In accordance with the invention, the device, generally indicated by reference character 10, comprises broadly: an outer rigid washer element 11, and an inner elastomeric washer element 12.
The outer washer element 11 is of conventional hollow cylindrical configuration, and may be made of any suitable metal, depending upon intended purpose. It is of rectangular cross-section, and it is bounded by an outer peripheral surface 15, first and second side surfaces 16 and 17, respectively, and an inner peripheral surface 18.
The inner washer element 12 may be of rubber, either natural or synthetic, or suitable elastomeric resin, again, depending upon intended purpose. It is of irregular cross-section, best seen in FIG. 2, and is bounded by an outer peripheral surface 20, suitably bonded, using known techniques to the inner peripheral surface 18 of the nut element 11. It includes a first annular portion 21 bounded by first and second concave surfaces 22 and 23. A second annular portion 24 is disposed radially inwardly thereof, and is bounded by convex surfaces 25 and 26. It will be observed that the first portion is normally of effective thickness less than that of the outer washer element 11, and the second portion is of effective thickness substantially greater than said thickness. Disposed inwardly of the second annular portion 24 is a third annular portion 27, of generally wedge-shaped configuration, and bounded by first and second concave surfaces 28 and 29 which meet in a curved relatively sharp edge 30 which dsfines the inner diameter of the opening 31 therein.
Referring to FIG. 3 in the drawing, the device 10 is shown in installed condition in conjunction with a nut 33 and threaded shank portion 34, the shank penetrating an opening 35 in a planar surface 36. Owing to the existence of normal commercial tolerances, the clearance between the threads on the shank and those on the nut are normally sufficient to allow leakage of a fluid, and the only practical manner in which a seal can be effected therebetween is by directly engaging the crests of the threads, and providing a means which will penetrate the interstice between the threads to the full depth of the base circle in the area where the crests of the threads are engaged. A size washer is selected such that the diameter of the edge 30 corresponds to the base thread diameter of the shank 34, and upon engagement therewith, the thread will deform the edge much in the manner of a self-tapping fastener. The inner portions of the convex surfaces 25 and 26 will then be deformed to engage the adjacent crests of the threads, thereby completing the seal.
When it is desired to use the same device in conjunction with an unthreaded portion of a shaft of the same outer diameter, the third annular portion 27 is stretched radially outwardly, and since the cross-section thereof is relatively thin, the expansion is readily absorbed by the filling in of the area axially outward of the concave surfaces 22 and 23.
I wish it to be understood that I do not consider the invention limited to the precise details of structure shown and set forth in this specification, for obvious modifications will occur to those skilled in the art to which the invention pertains.
I claim:
1. In combination, a fastener having a threaded shank, the threads of which have v-shaped flanks converging to a narrow root surface, and a multiple purpose sealing washer for effecting a seal between the head of the fastener and a parallel planar surface by surrounding a portion of said shank associated with said head; said washer including a relatively rigid outer washer element, and an inner concentric elastomeric annular element having a relatively rigid wide outer peripheral surface bonded to said rigid washer element, at least one concentric annular portion being of effective thickness greater than that of said rigid washer element spaced inwardly from said outer portion thereof, and having an inner peripheral annular portion of radially inwardly tapering cross section, formed by a pair of concave surfaces terminating in a single continuous annular sharp edge capable of entering into the spiral interstice created by the thread of the shank, said edge being thereby deformed at one point along said inner periphery by said thread upon engagement therewith; the unstressed diameter of said sharp edge corresponding to the root diameter of said threaded shank; said elastomeric element including a annular portion immediately adjacent said outer peripheral surface of effective thickness less than that of said rigid washer element to accommodate elastomeric flow in a radial direction upon compression of said elastomeric element.

Claims (1)

1. In combination, a fastener having a threaded shank, the threads of which have v-shaped flanks converging to a narrow root surface, and a multiple purpose sealing washer for effecting a seal between the head of the fastener and a parallel planar surface by surrounding a portion of said shank associated with said head; said washer including a relatively rigid outer washer element, and an inner concentric elastomeric annular element having a relatively rigid wide outer peripheral surface bonded to said rigid washer element, at least one concentric annular portion being of effective thickness greater than that of said rigid washer element spaced inwardly from said outer portion thereof, and having an inner peripheral annular portion of radially inwardly tapering cross section, formed by a pair of concave surfaces terminating in a single continuous annular sharp edge capable of entering into the spiral interstice created by the thread of the shank, said edge being thereby deformed at one point along said inner periphery by said thread upon engagement therewith; the unstressed diameter of said sharp edge corresponding to the root diameter of said threaded shank; said elastomeric element including a annular portion immediately adjacent said outer peripheral surface of effective thickness less than that of said rigid washer element to accommodate elastomeric flow in a radial direction upon compression of said elastomeric element.
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Cited By (29)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3986721A (en) * 1975-08-08 1976-10-19 Eagle-Picher Industries, Inc. Two component gasket and method of making it
US4094520A (en) * 1977-05-02 1978-06-13 The United States Of America As Represented By The Secretary Of The Army Self centering flange gasket assembly
FR2412012A1 (en) * 1977-12-13 1979-07-13 Aerpat Ag GASKET FOR FIXING PART BY PIN TO HEAD
FR2515713A1 (en) * 1981-11-04 1983-05-06 Gissinger Bernard Fastening for sheet roofing - comprises bolt passing through resilient sealing ring and annular skirt
FR2549915A1 (en) * 1983-07-29 1985-02-01 Materiel & Equipments Tec Setting screw with nut and plastics washer
FR2569456A1 (en) * 1984-08-24 1986-02-28 Ksa Dichtsysteme Gmbh Co Kg Seal
US4634132A (en) * 1985-05-20 1987-01-06 Parker Hannifin Corporation Elastomeric seal assembly with variable thickness shim
US4691928A (en) * 1984-09-12 1987-09-08 Ksa Dichtsysteme Gmbh Anti-vibrational electrical-conductivity-conformed seal arrangement
US4702657A (en) * 1986-06-27 1987-10-27 Parker Hannifin Corporation Self centering seal
US4900206A (en) * 1988-02-27 1990-02-13 K. K. Aoyama Seisakusho Nut with cover
US5183267A (en) * 1987-12-10 1993-02-02 Chicago Rawhide Manufacturing Co. Seal for sending unit
US5188495A (en) * 1992-02-28 1993-02-23 Illinois Tool Works Inc. Fastener assembly useful as drain plug
US5700017A (en) * 1996-09-26 1997-12-23 Dana Corporation Flanged rubber combustion seal
US6264566B1 (en) 1998-12-31 2001-07-24 Dana Corporation Thrust washer for universal joint
US6536775B1 (en) * 2001-01-30 2003-03-25 Dana Corporation Boundary gasket with integral bolt thread seals
US20030121935A1 (en) * 2001-12-31 2003-07-03 Arsenault Cathleen M. Gasket for use in a metering valve that limits seal intrusion
US6966611B1 (en) * 2002-01-24 2005-11-22 The Sollami Company Rotatable tool assembly
US20050281611A1 (en) * 2004-06-17 2005-12-22 Seals-It Seal component for use with a spherical rod end assembly
US20100143076A1 (en) * 2006-11-27 2010-06-10 Uchiyama Manufacturing Corp. Metalannular Gasket
WO2012112207A1 (en) * 2011-02-17 2012-08-23 Raytheon Company Gripping washer having one or more deformable gripping tabs and method for reducing foreign object debris
US20130177364A1 (en) * 2012-01-05 2013-07-11 ATS Cases, Inc. Rivet sealing washer
US20140064877A1 (en) * 2012-08-30 2014-03-06 Airbus Operations Sas Assembly of two parts made of composite material
US20180135672A1 (en) * 2015-06-03 2018-05-17 A. Raymond Et Cie. Scs Deformable body, and system comprising a deformable body and an anti-creepage ring
US20190097407A1 (en) * 2017-09-25 2019-03-28 The Boeing Company Dual protection inner seal washer for electromagnetic effects (eme) fasteners
US10988089B2 (en) 2019-08-27 2021-04-27 Manitou Equipment America, Llc Slidable operator-display support
US20210396316A1 (en) * 2019-01-23 2021-12-23 Nok Corporation Gasket
US11365760B1 (en) * 2017-07-04 2022-06-21 Damian Daigle Fire rated isolation washer
US11674544B2 (en) 2021-04-20 2023-06-13 National Nail Corp. Sealed fastener cap and related method of manufacture
US12228165B2 (en) 2023-04-12 2025-02-18 National Nail Corp. Sealed fastener cap and related method of manufacture

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US2761347A (en) * 1953-07-30 1956-09-04 Jr John R Mckee Fastener and composite sealing washer having a deflectable lip
US2795444A (en) * 1954-03-15 1957-06-11 Rohr Aircraft Corp Sealing washer
GB836197A (en) * 1956-07-02 1960-06-01 Dowty Seals Ltd Improvements in and relating to joint-making assemblies
GB892870A (en) * 1959-12-21 1962-04-04 John Ryan Mckee Jr Improvements in or relating to sealing washers and to screw fasteners incorporating such washers
US3259404A (en) * 1963-10-23 1966-07-05 Parker Hannifin Corp Sealed joint and gasket therefor

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US2761347A (en) * 1953-07-30 1956-09-04 Jr John R Mckee Fastener and composite sealing washer having a deflectable lip
US2795444A (en) * 1954-03-15 1957-06-11 Rohr Aircraft Corp Sealing washer
GB836197A (en) * 1956-07-02 1960-06-01 Dowty Seals Ltd Improvements in and relating to joint-making assemblies
GB892870A (en) * 1959-12-21 1962-04-04 John Ryan Mckee Jr Improvements in or relating to sealing washers and to screw fasteners incorporating such washers
US3259404A (en) * 1963-10-23 1966-07-05 Parker Hannifin Corp Sealed joint and gasket therefor

Cited By (39)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3986721A (en) * 1975-08-08 1976-10-19 Eagle-Picher Industries, Inc. Two component gasket and method of making it
US4094520A (en) * 1977-05-02 1978-06-13 The United States Of America As Represented By The Secretary Of The Army Self centering flange gasket assembly
FR2412012A1 (en) * 1977-12-13 1979-07-13 Aerpat Ag GASKET FOR FIXING PART BY PIN TO HEAD
US4236438A (en) * 1977-12-13 1980-12-02 Aerpat A.G. Seal for headed pin fastener member
FR2515713A1 (en) * 1981-11-04 1983-05-06 Gissinger Bernard Fastening for sheet roofing - comprises bolt passing through resilient sealing ring and annular skirt
FR2549915A1 (en) * 1983-07-29 1985-02-01 Materiel & Equipments Tec Setting screw with nut and plastics washer
FR2569456A1 (en) * 1984-08-24 1986-02-28 Ksa Dichtsysteme Gmbh Co Kg Seal
US4691928A (en) * 1984-09-12 1987-09-08 Ksa Dichtsysteme Gmbh Anti-vibrational electrical-conductivity-conformed seal arrangement
US4634132A (en) * 1985-05-20 1987-01-06 Parker Hannifin Corporation Elastomeric seal assembly with variable thickness shim
US4702657A (en) * 1986-06-27 1987-10-27 Parker Hannifin Corporation Self centering seal
EP0251516A1 (en) * 1986-06-27 1988-01-07 Parker Hannifin Corporation Seal assembly for a fastener
US5183267A (en) * 1987-12-10 1993-02-02 Chicago Rawhide Manufacturing Co. Seal for sending unit
US4900206A (en) * 1988-02-27 1990-02-13 K. K. Aoyama Seisakusho Nut with cover
US5188495A (en) * 1992-02-28 1993-02-23 Illinois Tool Works Inc. Fastener assembly useful as drain plug
US5700017A (en) * 1996-09-26 1997-12-23 Dana Corporation Flanged rubber combustion seal
US6264566B1 (en) 1998-12-31 2001-07-24 Dana Corporation Thrust washer for universal joint
US6536775B1 (en) * 2001-01-30 2003-03-25 Dana Corporation Boundary gasket with integral bolt thread seals
US20030121935A1 (en) * 2001-12-31 2003-07-03 Arsenault Cathleen M. Gasket for use in a metering valve that limits seal intrusion
US6966611B1 (en) * 2002-01-24 2005-11-22 The Sollami Company Rotatable tool assembly
US20050281611A1 (en) * 2004-06-17 2005-12-22 Seals-It Seal component for use with a spherical rod end assembly
US20100143076A1 (en) * 2006-11-27 2010-06-10 Uchiyama Manufacturing Corp. Metalannular Gasket
US8955851B2 (en) * 2006-11-27 2015-02-17 Kenji Matsumoto Metalannular gasket
WO2012112207A1 (en) * 2011-02-17 2012-08-23 Raytheon Company Gripping washer having one or more deformable gripping tabs and method for reducing foreign object debris
US8616818B2 (en) 2011-02-17 2013-12-31 Raytheon Company Gripping washer having one or more deformable gripping tabs and method for reducing foreign object debris
US20130177364A1 (en) * 2012-01-05 2013-07-11 ATS Cases, Inc. Rivet sealing washer
US9249819B2 (en) * 2012-01-05 2016-02-02 ATS Cases, Inc. Rivet sealing washer
US9435365B2 (en) 2012-01-05 2016-09-06 ATS Cases, Inc. Rivet sealing washer
US20140064877A1 (en) * 2012-08-30 2014-03-06 Airbus Operations Sas Assembly of two parts made of composite material
US9353785B2 (en) * 2012-08-30 2016-05-31 Airbus Operations Sas Assembly of two parts made of composite material
US20180135672A1 (en) * 2015-06-03 2018-05-17 A. Raymond Et Cie. Scs Deformable body, and system comprising a deformable body and an anti-creepage ring
US10801536B2 (en) * 2015-06-03 2020-10-13 A. Raymond Et Cie Deformable body, and system comprising a deformable body and an anti-creepage ring
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